/* Yet Another Forum.NET
 * Copyright (C) 2003-2005 Bjørnar Henden
 * Copyright (C) 2006-2013 Jaben Cargman
 * Copyright (C) 2014-2020 Ingo Herbote
 * https://www.yetanotherforum.net/
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at

 * https://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

namespace YAF.Types.Interfaces
{
    #region Using

    using System;
    using System.Collections.Generic;
    using System.Linq;

    #endregion

    /// <summary>
    /// The read track current user extensions.
    /// </summary>
    public static class IReadTrackCurrentUserExtensions
    {
        #region Public Methods

        /// <summary>
        /// The get forum topic read.
        /// </summary>
        /// <param name="readTrackCurrentUser">The read track current user.</param>
        /// <param name="forumId">The forum id.</param>
        /// <param name="topicId">The topic id.</param>
        /// <param name="forumReadOverride">The forum read override.</param>
        /// <param name="topicReadOverride">The topic read override.</param>
        /// <returns></returns>
        public static DateTime GetForumTopicRead(
            this IReadTrackCurrentUser readTrackCurrentUser,
            int forumId,
            int topicId,
            DateTime? forumReadOverride = null,
            DateTime? topicReadOverride = null)
        {
            CodeContracts.VerifyNotNull(readTrackCurrentUser, "readTrackCurrentUser");

            var lastRead = readTrackCurrentUser.GetTopicRead(topicId, topicReadOverride);
            var lastReadForum = readTrackCurrentUser.GetForumRead(forumId, forumReadOverride);


            if (lastReadForum > lastRead)
            {
                lastRead = lastReadForum;
            }

            return lastRead;
        }

        /// <summary>
        /// The set forum read.
        /// </summary>
        /// <param name="readTrackCurrentUser">
        /// The read track current user. 
        /// </param>
        /// <param name="forumIds">
        /// The forum ids. 
        /// </param>
        public static void SetForumRead(this IReadTrackCurrentUser readTrackCurrentUser, IEnumerable<int> forumIds)
        {
            CodeContracts.VerifyNotNull(readTrackCurrentUser, "readTrackCurrentUser");
            var enumerable = forumIds.ToList();
            CodeContracts.VerifyNotNull(enumerable, "forumIds");

            enumerable.ForEach(readTrackCurrentUser.SetForumRead);
        }

        /// <summary>
        /// The set topic read.
        /// </summary>
        /// <param name="readTrackCurrentUser">
        /// The read track current user. 
        /// </param>
        /// <param name="topicIds">
        /// The topic ids. 
        /// </param>
        public static void SetTopicRead(this IReadTrackCurrentUser readTrackCurrentUser, IEnumerable<int> topicIds)
        {
            CodeContracts.VerifyNotNull(readTrackCurrentUser, "readTrackCurrentUser");
            CodeContracts.VerifyNotNull(topicIds, "topicIds");

            foreach (var id in topicIds)
            {
                readTrackCurrentUser.SetTopicRead(id);
            }
        }

        #endregion
    }
}